CurrentUsage
The command 'cup.pl' will report the hardware specs for all cluster computers, who is logged into each computer, and what jobs are currently running on each computer. It checks for the file "~/.my_hosts" and queries the machines listed in this file. Note that "~/.my_hosts" can contain ANY machines that you can access via ssh without a password. The one catch is that for 'cup.pl' to work, it expected the file 'compStats.pl' to live in /usr/local/bin and thus this file would need to be copied to other machines you want to monitor with 'cup.pl'. In the case of our cluster, you don't need to worry about any of this. Just know that you can specify exactly which computers cup.pl checks, if you so desire.
For help:
[fisher@jkim25]$ cup.pl -h
If a machine has 4 cpu, as reported by cup.pl, then it can handle a 'load' of 4. Any jobs run on a machine with a load greater than 4 will hinder the running of all other jobs on that machine.